Method and device for determining irrigation parameters of crops

A crop and parameter technology, applied in the fields of botanical equipment and methods, measuring devices, watering devices, etc., can solve the problems of irrigation water consumption or irrigation time, and achieve the effect of energy saving and rational utilization

Inactive Publication Date: 2019-04-09
HAONONGYI E COMMERCE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, although various irrigation technologies are being developed and improved day by day, but the irrigation parameters are determined according to the specific r

Method used

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  • Method and device for determining irrigation parameters of crops
  • Method and device for determining irrigation parameters of crops
  • Method and device for determining irrigation parameters of crops

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Embodiment

[0063] Please combine Figure 5 and Figure 6 , as an embodiment of the present invention, the present invention provides a kind of variable based on crop root system distribution to determine the irrigation parameter method of crop, in order to meet the needs of normal growth of crops, the moisture content allowed in the upland crop field (root system water-absorbing layer) must be Keep within a certain suitable range, when the soil moisture is close to the lower limit of the moisture content allowed by the crop, that is, the lower limit of irrigation θ imin Different soil types have different lower limits of water content. You can select a test field for several times of sufficient irrigation in advance. In order to ensure the stability of the data, the same set of soil moisture sensors is used to record the continuous soil moisture from wet to dry. process, so as to obtain the maximum value θ of the soil moisture content of the same set of soil moisture monitoring equipmen...

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Abstract

The invention provides a method and device for determining irrigation parameters of crops. At least one irrigation parameter is determined according to the root system depth and the root system characteristics of the crops. The method comprises the following steps: determining root system length of the crops as the irrigation depth; dividing a soil layer of the crops as at least one layer of irrigation layer according to the irrigation depth; for each layer of irrigation layer, determining a water content lower limit value of the soil; for each layer of irrigation layer, determining a moisturechange rate according to the water content lower limit value of the layer of soil and the actual water content of the layer of the soil; taking a mean value of the moisture change rate; and determining whether needs to irrigate the crops according to the mean value. By considering the distribution characteristics that the crop root system is an inverted triangle structure from big to small, the water content states and changes of the soil at different depths are monitored, the water resource is reasonably utilized when the maximum irrigation amount to the crop root area is effectively and reasonably controlled, and the energy source is saved.

Description

technical field [0001] The invention relates to the technical field of agricultural irrigation, in particular to a method and device for determining irrigation parameters including irrigation date, irrigation water volume and irrigation duration based on variables of crop root system distribution. Background technique [0002] Irrigation is a technical measure to supplement the water needed by crops. In order to ensure the normal growth of crops and obtain high and stable yields, sufficient water must be supplied to crops. my country is one of the 13 most water-scarce countries in the world. The per capita water resources are about 2,200 cubic meters, which is only a quarter of the world average, and the temporal and spatial distribution of water resources is extremely uneven. my country's agriculture, which is a large water user, accounts for 62% of the total water consumption, but its water use efficiency is extremely low, only 0.48, which is far behind developed countries...

Claims

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Application Information

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IPC IPC(8): G01N33/24A01G25/16G06Q50/02
CPCA01G25/167G01N33/246G06Q50/02
Inventor 陈植炜
Owner HAONONGYI E COMMERCE CO LTD
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